Chpter IV Mechanical System
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
143
Fig. 4-2-17 Installing the vacuum pump
assembly
9 N·
m±3 N·
m
Reassembling the vacuum pump assembly
⑧
(1) Install the vacuum pump to the rear end of the
cylinder head exhaust camshaft, with the flat bump of its
bearing inserted into the groove of the rear end of the
cylinder head exhaust camshaft and the rabbet and the
rabbet round hole matched perfectly.
(2) Tighten the 3 hexagon flange bolts (M6×20)
connecting the vacuum pump and cylinder head flange
and screw them down as per specified torque. See Fig.
4-2-17.
Fig. 4-2-18 Installing the fuel injector
assembly
Fig. 4-2-19 Installing the cylinder head cover
assembly
Tightening torque for vacuum pump fastening bolt
9 N·
m±3 N·
m
(3) Install the vacuum connecting pipe.
There should be no deflection or misplacement
after installation.
Reassembling the fuel injector assembly
⑦
(1) Tighten the supporting bolts of the fuel injector
ballast by using the required torque onto the cylinder
head.
Tightening torque for supporting bolt of fuel injector
ballast
23 N·
m±3 N·
m
(2) Install the copper washer and O-ring to the fuel
injector and make sure there is only one copper washer
on the fuel injector and the copper washer is laid flatly.
(3) According to the numbers 1, 2, 3 and 4 on the fuel
injector lines, install the fuel injectors into the
corresponding fuel injector mounting holes in the
cylinder heads 1, 2, 3 and 4.
(4) Place one end of the fuel injector ballast on ballast
supporting bolt and the other end in fuel injector ballast
groove.
(5) Install and tighten the fastening bolt component of
fuel injector ballast to the required torque. No air
leakage is allowed at the injector gasket.
Tightening torque for fastening bolt component of
fuel injector ballast
Cylinder head
Vacuum
pump
assembly
Fuel injector
assembly
Cylinder head
cover
Cylinder head
cover packing
